Which resistor is in series with resistor R?

• R₁

• R₂

• R₃

• R₄

The two ends of a 3.0-ohm resistor are connected to a 9.0-V battery. What is the current through the resistor?

• 27 A

• 6.3 A

• 3.0 A

• 0.33 A

The two ends of a 3.0-ohm resistor are connected to a 9.0-V battery. What is the total power delivered by the battery to the circuit?

• 3.0 W

• 27 W

• 0.33 W

• 0.11 W

The basic function of an electromotive force in a circuit is to do which of the following?

• Convert electrical energy into some other form.

• Convert some other form of energy into electrical.

• None of the above choices are valid.

Tags

NGSS.HS-PS3-3

Three resistors connected in parallel have individual values of 4.0, 6.0, and 10.0 ohm, respectively. If this combination is connected in series with a 12-V battery and a 2.0-ohm resistor, what is the current in the 10-ohm resistor?

• 0.59 A

• 1.0 A

• 11 A

• 16 A

Three resistors connected in parallel each carry currents labeled I₁, I₂ and I₃. Which of the following expresses the value of the total current I_T in the combined system?

• I_T = I₁ + I₂ + I₃

• I_T = (1/I₁ + 1/I₂ + 1/I₃)

• I_T = I₁ = I₂ = I₃

• I_T = (1/I₁ + 1/I₂ + 1/I₃)^-1

Which two resistors are in parallel with each other?

• R and R₄

• R₂ and R₃

• R₂ and R₄

• R and R₁

If R₁ < R₂ < R₃, and if these resistors are connected in parallel in a circuit, which one has the highest current?

• R₁

• R₂

• R₃

• All have the same current.

What is the maximum number of 60-W light bulbs you can connect in parallel in a 120-V home circuit without tripping the 30-A circuit breaker?

• 11

• 35

• 59

• 3600

The following three appliances are connected to a 120-V house circuit: i) toaster, 1 200 W, ii) coffee pot, 750 W, and iii) microwave, 800 W. If all were operated at the same time, what total current would they draw?

• 3.0 A

• 5.0 A

• 10 A

• 23 A